One of the products of the anti-West East German state, was the formation of the Ministerium für Staatssicherheit, more commonly known as the Stasi. The secret police, formed in the early 1950s, was developed to keep an eye on the country's own population, and also tasked with cultural purification. One of their challenges in the 1970s and 80s was the growth of the underground punk movement. The Stasi started to jail youths found listening to such music. They also worked to turn these musicians and 'scene' members into informants.